Wrench



(No Model.)

B. F; GROSBIE.

WRENCH.

No. 590,363. Patented Sept. 21,1897.

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UNITED STATES PATENT OFFICE.

ROBERT FOOTE CROSBIE, OF PRIMGHAR, IOIVA.

WRENCH.

SPECIFICATION forming part of Letters Patent No. 590,363, datedSeptember 21, 1897.

Application filed June 19, 1897.

To all whom it may cmwern;

Be it known that 1, ROBERT FoorE CRosBIE, a citizen of the UnitedStates, residing at Primghar, in the county of OBrien and State of Iowa,have invented certain new and useful Improvements in renches, of whichthe following is a full and complete specification, such as will enablethose skilled in the art to which it appertains to make and use thesame.

This invention relates to wrenches; and the object thereof is to providean improved device of this class which consists of a suitable handle,pivoted jaws connected therewith and provided with circular heads, and alongitudinally-movable rack-bar mounted in said handle and adapted tooperate in connection with ratchet-teeth formed on said circular heads,so as to open and close said jaws.

- The invention is fully disclosed in the following specification, ofwhich the accompanying drawings form a part, in which Figure l is a planview of my improved wrench; Fig. 2, a side view thereof; and Fig.- 3, aview similar to Fig. 1, one of the side plates of the handle beingdetached.

In the drawings forming part'of this specification the separate parts ofmy improvement are designated by the same numerals of reference in eachof the views.

In the practice of my invention I provide a wrench which is providedwith a handle which consists of a central portion 5 and two detachableside plates 6.

The central portion 5 of the handle is wider at one end than at theother, as shown at 7, and the detachable side plates 6 are similar inform, and formed in the wider end of the central portion of the handleis a longitudinal slot 8 and a transverse slot or opening 8, whichcommunicates therewith, and mounted in the longitudinal slot or opening8 is a shaft 0, which is screw-threaded fora portion of its length, andmounted on the screw-threaded portion of said shaft is a wheel 10, bywhich the shaft may be operated.

vThe transverse slot or opening 8 extends through the side plates 6, andthe wheel 10 projects therethrough, and the outer end of the shaft 9 isrectangular in cross-section and provided at its opposite sides withratchetteeth or projections 11.

The opposite sides of the central portion 5 Serial No. 641,465. (Nomodel.)

of the handle at the wider end thereof are cut away to form circularnotches or recesses, as shown at 12, and the sides 6 are provided withsemicircular heads 13, which overlap these cavities or recesses 12. Myimproved wrench is also provided with two similar jaws 14, which arepreferably of the form shown in the drawings, said jaws being wider atthe inner than at the outer ends, and said jaws are also provided withcircular heads 15, which fit between the semicircular heads 13 of thesides 6 and which are pivoted therein by means of the bolts or pins 16.

The semicircular-heads 15 of the jaws 14: are provided on their innerperimeters with teeth 17, which are adapted to engage with those formedon the outer end of the shaft 9, and the jaws 14 are also preferablyprovided with teeth or serrations 18, which are formed in their adjacentsurfaces.

The operation will be readily understood from the foregoing descriptionwhen taken in connection with the accompanying drawings and thefollowing statement thereof.

The side plates 6 of the handle are secured to the central portion 5thereof by the pivot pins or bolts 16 and also by other pins or bolts.By turning the wheel 10 the shaft 9 may be moved outwardly or inwardly,according to the direction in which said wheel is turned, and in thisoperation the teeth 11 on the outer end thereof will operate inconnection with the teeth 17 on the circular heads 15 of the jaws 14 andsaid jaws will be separated or drawn together, as will be readilyunderstood, the direction of the movement of said jaws depending on thedirection of the movement of the shaft 9.

My improved wrench is simple in construction and operation and isperfectly adapted to accomplish the result for which it is intended, andit will be apparent that changes in and modifications of theconstruction herein described may be made without departing itsadvantages.

Having fully described my invention, I claim as new and desire to secureby Letters Patent I 1. Arwrench, comprising a handle, one end of whichis wider than the other, and provided with two pivoted jaws, each ofwhich is from the spirit of my invention or sacrificing provided with acircular head through which the pivot pins or bolts pass, and alongitudinally-movable shaft mounted in said handle, and provided on theopposite sides of its outer end with teeth or projections which areadapted to operate in connection with corresponding teeth or projectionsformed on the circular heads of said jaws, and means for moving saidshaft longitudinally of the handle, substantially as shown anddescribed.

2. A wrench, comprising a handle, one end of which is Wider than theother, and provided with two pivoted jaws, each of which is providedwith a circular head through which the pivot pins or bolts pass, and alongitudinally-movable shaft mounted in said handle, and provided on theopposite sides of its outer end with teeth or projections which areadapted to operate in connection with corresponding teeth or projectionsformed 011 the circular heads of said jaws, and means for moving saidshaft longitudinally of the handle, consisting of a wheel which ismounted thereon, and which projects through the sides of the handle,said wheel being screw-threaded interiorly, and said shaft being alsoscrewthreaded, substantially as shown and described.

3. A wrench, comprising a handle, composed of a central longitudinalportion, and two side plates, said handle being wider at one end than atthe other, and being also provided with two jaws which are pivotedbetween the wider ends of said side plates, said jaws being providedwith circular heads through which the pivot pins or bolts pass, and saidheads being provided with teeth or projections, and alongitudinally-movable shaft mounted in the central portion of thehandle, and provided with teeth or projections on the opposite sides ofthe outer end thereof, and means for moving said shaft 1ongitudinally ofthe handle, substantially as shown and described.

In testimony that I claim the foregoing as my invention 1 have signed myname, in presence of the subscribing witnesses, this 14th day of June,1897.

ROBERT FOOTE OROSBIE. lVitnesses:

CHRISTOPHER R. WEST, ARCHIBALD ORosBIE, J r.

